It seemed shady from the start, but since it involved python, something I had very little experience with, I decided to try it. I worked like 15-20 hours per week for a few months, learned enough python to be comfortable with it and some other APIs as well (being a little vague on purpose). Later said they could maybe afford to pay me some $$ due to another company they had founded being sold (I verified this much, the person had founded and sold a few companies).
It eventually fell apart after my first deliverable (as I expected, mostly). I used encryption to send python files that would only work for a couple of weeks. Not sure if they ever did anything with it (it's been a few years). Oh well, it ended up helping me get another job where python was a good skill to have.
The biggest loss was that of losing all trust in the person setting things up.